See CR Turbos are offering Roller bearing cartridges for the older T3/T34 etc turbos, which offers the performance of fitting a later GT series turbo without the need to change/modify the exhaust manifold/downpipe ect???????

Have seen an article showing back to back differance between standard T34 & a RB' T34 which was huge, with the right engine i'm sure it will make a huge differance, but at £900+ does it offer lotta' bang for your buck???

Cheers